(1)Benzopyrano(3,4-b)furo(2,3-h)(1)benzopyran-6(6aH)-one, 1,2,12,12a-tetrahydro-6a-hydroxy-8,9-dimethoxy-2-(1-methylethenyl)-, (2R-(2alpha,6abeta,12abeta))- 12-Hydroxyrotenone 16431-42-8 33987-33-6 6alpha(beta),12alpha(beta)-Rotenolone Rotenolone